Added graph for plotting the audio level from an Rtc event log.

webrtc/tools/event_log_visualizer/main.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <iostream>
 
 #include "gflags/gflags.h"
 #include "webrtc/call/rtc_event_log_parser.h"
 #include "webrtc/tools/event_log_visualizer/analyzer.h"
 #include "webrtc/tools/event_log_visualizer/plot_base.h"
 #include "webrtc/tools/event_log_visualizer/plot_python.h"
 
 DEFINE_bool(incoming, true, "Plot statistics for incoming packets.");
 DEFINE_bool(outgoing, true, "Plot statistics for outgoing packets.");
 DEFINE_bool(plot_all, true, "Plot all different data types.");
 DEFINE_bool(plot_packets,
             false,
             "Plot bar graph showing the size of each packet.");
 DEFINE_bool(plot_audio_playout,
             false,
             "Plot bar graph showing the time between each audio playout.");
+DEFINE_bool(plot_audio_level,
+            false,
+            "Plot line graph showing the audio level.");
 DEFINE_bool(
     plot_sequence_number,
     false,
     "Plot the difference in sequence number between consecutive packets.");
 DEFINE_bool(
     plot_delay_change,
     false,
     "Plot the difference in 1-way path delay between consecutive packets.");
 DEFINE_bool(plot_accumulated_delay_change,
             false,
@@ skipping 63 matching lines @@
       analyzer.CreateAccumulatedPacketsGraph(
           webrtc::PacketDirection::kOutgoingPacket,
           collection->AppendNewPlot());
     }
   }
 
   if (FLAGS_plot_all || FLAGS_plot_audio_playout) {
     analyzer.CreatePlayoutGraph(collection->AppendNewPlot());
   }
 
+  if (FLAGS_plot_all || FLAGS_plot_audio_level) {
+    analyzer.CreateAudioLevelGraph(collection->AppendNewPlot());
+  }
+
   if (FLAGS_plot_all || FLAGS_plot_sequence_number) {
     if (FLAGS_incoming) {
       analyzer.CreateSequenceNumberGraph(collection->AppendNewPlot());
     }
   }
 
   if (FLAGS_plot_all || FLAGS_plot_delay_change) {
     if (FLAGS_incoming) {
       analyzer.CreateDelayChangeGraph(collection->AppendNewPlot());
     }
@@ skipping 39 matching lines @@
   }
 
   if (FLAGS_plot_all || FLAGS_plot_network_delay_feedback) {
     analyzer.CreateNetworkDelayFeedbackGraph(collection->AppendNewPlot());
   }
 
   collection->Draw();
 
   return 0;
 }